New Chief Air Force Gen. Joseph L. Lengyel delivers remarks during a National Guard Bureau change-of-responsibility ceremony as Defense Secretary Ash Carter and Army Gen. Frank Grass look on at the Pentagon, Aug. 3, 2016. Lengyel took over as chief of the bureau during the ceremony, succeeding Grass. DoD photo by Navy Petty Officer 1st Class Tim D. Godbee SHARE: Download: Full Size (1.01 MB) Credit: Petty Officer 1st Class Tim D. Godbee VIRIN: 160803-D-SK590-405A.JPG Photo Gallery